* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0f0f0f;
  color: #eee;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}
.panel {
  background: #1a1a1a;
  padding: 28px 32px;
  border-radius: 12px;
  width: 100%;
  max-width: 520px;
  border: 1px solid #2a2a2a;
}
h1 { font-size: 22px; margin-bottom: 4px; }
.sub { color: #888; font-size: 13px; margin-bottom: 22px; }
label {
  display: block;
  font-size: 13px;
  color: #aaa;
  margin-bottom: 6px;
  margin-top: 14px;
}
input, select {
  width: 100%;
  padding: 11px 12px;
  background: #111;
  border: 1px solid #333;
  color: #fff;
  border-radius: 6px;
  font-size: 14px;
}
input:focus, select:focus { outline: none; border-color: #f38020; }
button {
  background: #f38020;
  color: #000;
  border: none;
  padding: 12px 20px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 600;
  font-size: 14px;
  margin-top: 20px;
  width: 100%;
}
button:hover { background: #ff9a3c; }
#result { margin-top: 22px; padding-top: 18px; border-top: 1px solid #2a2a2a; }
#result p { font-size: 13px; color: #aaa; margin-bottom: 8px; }
#infectLink { margin-bottom: 10px; }
#copyBtn { width: auto; margin-top: 0; padding: 10px 18px; }
.hint { font-size: 12px; color: #666; margin-top: 10px; }
.hidden { display: none !important; }